Sealed beam headlight



Oct. 13, 1964 c. SARANGA SEALED BEAM HEADLIGHT Filed NOV. 1, 1962 INVENTOR. ("E5778 5 SfiBA/VG SEALED BEAM HEADLIGHT CesareSaranga, 6 Marwood Road, Manor Haven,

' Port Wa'sliington,N.Y.

Filed Nov. 1, 1962, Ser. No. 234,779 3 Claims. or. sin-11s This invention relates to a sealed beam headlight, and more particularly to such a headlightsuitablefor producing diffuse illumination. 3 a g It is among the Objects of the invention to provide 3,153,168 Patented Oct. 13., 1964 and 17e are aligned With the axis and reflectors 17cand 17d are disposed to the right of the axis. t

A second group-of frustoconically shaped reflectors 18 are formed in the face plate 14, disposed'instraight line relation aligned with the vertical axis 12. The

second group of reflectors consists of a centrally disposed collector 18a aligned with the-filament'16 coaxially of the horizontal axis 11,and a pair of receivers 18b and 180 positioned on opposite sides of the collector 18a.

The two groups of frustoconically shaped reflectors 17 and 18 are' inwardly tapering truncated projections a sealed beam headlight which produces agditfuse light 3 beam useful for resolving images over relatively long distances, and yet which minimizes, if not eliminates, con

comitant glare.

A further object of the invention is to provide such a headlight which can be simply and economically manufactured by known mass production techniques.

Other objects and advantages of the invention will be apparent from the following detailed description thereof. In accordance with this invention, a non-glare headlight is provided which comprises'a concave support and a convex face plate hermetically secured to said support, and involves a lighting filament mounted centrally of the support, a first group of frustoconically shaped reflectors formed in the support disposed annularly of the filament and a second group of frustoconically shaped reflectors formed in the face plate spaced linearly thereof. Thev second group of reflectors includes a centrally disposed collector aligned with the filament, and a pair of receivers positioned onv opposite sides of the collector and 1 having internal faces so located that perpendicular bisectors thereof define a projected area encompassing the- Unexpectedly, when the identified groups of filament. frustoconically shaped reflectors are arranged relative to the lighting filament in the aforesaid manner, a nonthereof, illustrated in the accompanying drawing in which:

' FIGURE 1 is a perspective view of a headlight embodying the invention;

FIGURE 2 is a front elevation of the headlight of FIGURE 1; and

FIGURE 3 is a longitudinal section through the headlight, viewed in the direction of line 33' in FIGURE 2.

formed in the support 13 and face plate 14, respectively. The reflectors 17a to 17] are asymmetrical, the minor bases-or internal reflective faces 19 thereof facing the reflectiveface 21 of the collector 18a in such a'manner that a perpendicular line concentrically through each such reflective face 19 would intersect one of the reflective surfaces of the collector 18a. In this manner light reflected from the'collector is reflected in turn to the first group of reflectors 17 and transmitted diffusely therefrom through the face plate 14.

Similarly, the receivers 18b and 18c are formed asymmetrically, the minor bases or internal reflective faces 22 thereof facing the filament 16 such that perpendicular lines directed concentrically through such faces determine a projected area substantially coextensive with and including such filament. In this manner, light transmitted from the filament to the internal reflective faces 22 of the receivers is reflected back to the support and transmitted outwardly therefrom through the faceplate 14. 7

There is thus produced a diffused beam of light transmitted through the face plate which facilitates "image resolution over relatively great distances without producing concomitant glare. It will, of course, be understood that the above proposed mechanism of operation of the non-glare headlight is intended as illustrative and is'not Referring to the drawing, a headlight is shown comprising a sealed envelope 10 defined, with respect to a pair of imaginary axes 11 and 12, by a concave support 13 and a convex face plate 14 secured thereto. Mounted centrally of and within the support 13 extending longitudinally of the horizontal axis 11 in a socket 15 is a light filament 16. It 'will be understood that any of the conventional headlamp filaments, connected to a battery or other power source by well known means, may be utilized in the practice of the present invention.

A first group of frustoconically shaped reflectors 17 are formed in'the support 13, disposed annularly of the filament 16. As illustrated'in the drawing, it is preferred to provide six such reflectors spaced symmetrically of the filament, reflectors 17a, 17b and 170 being disposed above the horizontal axis 11 with which the filament is aligned and reflectors 17d, 1% and 17 being disposed below such axis. Similarly, reflectors 17a and 17] aredisposed to the left of axis'12, viewing FIGURE 2, reflectors 17b limiting of the invention.

The projections 17a to 17 and 18a to 18c described above may be silvered or otherwise treated by conventional means to impart reflective properties thereto,

tion shall be interpreted as illustrative and not in a limiting 7 sense.

What is claimed ,is: r 1. A non-glare sealed beam'headlight comprising a concave support and a convex face plate hermetically securedto said support; a light filament mounted centrally of said support; a first group of frustoconically shaped reflectors formed in said support disposed annularly of said filament; and a second group .of frustoconically shaped reflectors formed in said face plate linearly thereof, said second group of reflectors comprising a centrally disposed collector aligned with said filament, and a pair of receivers disposed on opposite sides of said collector and having internal faces so disposed that perpendicular lines directed concentrically through said faces define a projected area encompassing said filament.

2. A non-glare sealed beam headlight comprising a concave support and a convex face plate hermetically secured to said support; a lighting filament mounted centrally of and within said support extending axially thereof, a first group of six frustoconically shaped reflectors formed in said support, disposed symmetrically of said filament and tapering inwardly of said support; and a second group offrustoconically shaped reflectors formed in said face plate, disposed in straight line relation and tapering inwardly of said face plate,- said second group of reflectorsincluding a centrally disposed collector having 3 an internal reflective face positioned coaxially of said filament in alignment therewith and a pair of receivers disposed on opposite sides of said collector having internal reflective faces which are so disposed that perpendicular lines directed concentrically of said faces determine a closed projected area including said filament.

3. A non-glare sealed beam headlight comprising a concave support and a convex faceplate hermetically secured to said support; a lighting filament mounted centrally of and within said support; a first group of-six frustoconically shaped reflectors formed in said support, said first rgroup of reflectors disposed symmetrically of said filament and each of said reflectors tapering asymmetrically inwardly of said support such that the minor .base of each said reflector defines a reflective face'disposed such that a perpendicular line, directed concentrically thereof intersects the minor base :of the hereinafter set forth collector; and a second group of 'frustoconically shaped reflectors formed in said face plate, said second group of reflectors disposed in straight line relation and including a centrally disposed collector positioned symmetrically of and having a reflective face coaxial with said filament, and a pair of receivers disposed on opposite sides of said collector and asymmetrically tapering inwardly towards said filament such that their minor bases define reflective faces disposed such that perpendicular lines directed concentrically thereof determine a projected area substantially coextensive with the area of, and including, said filament, whereby light transmitted from said filament to the reflective faces of said receivers is reflected back to said support and transmitted outwardly therefrom through said face plate, and light transmitted from said filament to the reflective faces of said collector is reflected back to said support andftransmitted outwardly therefrom through said faceplate, thereby producing a diffused non-glare beam o'f-light.

"No references cited. a 

1. A NON-GLARE SEALED BEAM HEADLIGHT COMPRISING A CONCAVE SUPPORT AND A CONVEX FACE PLATE HERMETICALLY SECURED TO SAID SUPPORT; A LIGHT FILAMENT MOUNTED CENTRALLY OF SAID SUPPORT; A FIRST GROUP OF FRUSTOCONICALLY SHAPED REFLECTORS FORMED IN SAID SUPPORT DISPOSED ANNULARLY OF SAID FILAMENT; AND A SECOND GROUP OF FRUSTOCONICALLY SHAPED REFLECTORS FORMED IN SAID FACE PLATE LINEARLY THEREOF, SAID SECOND GROUP OF REFLECTORS COMPRISING A CENTRALLY DISPOSED COLLECTOR ALIGNED WITH SAID FILAMENT, AND A PAIR OF RECEIVERS DISPOSED ON OPPOSITE SIDES OF SAID COLLECTOR AND HAVING INTERNAL FACES SO DISPOSED THAT PERPENDICULAR LINES DIRECTED CONCENTRICALLY THROUGH SAID FACES DEFINE A PROJECTED AREA ENCOMPASSING SAID FILAMENT. 